Apparatus for electric welding.



C..H. KICKLIGHTEH. APPARATUS FOR ELECTRIC WELDING.

APPLlcATloN HLED [un: 15. 1914.

Patented Jpn. 8,1918.

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` 40 and communicate the 50 seam can 55 tion a method for passing UNITED STATES rATENT oEEroE.

CHABLESH. KIJKL'IGHTER, or ATLANTA, GEoBeIA. 1 I

mAnA'rUsnEon ELEcrnIc WELDING.

rllinal application led January l26, 1914, Serial No. 814,3874Q Divided andjthis appiicationnled June. 15,

Specification of Letters latent.

' Patented Jan.s,191s.

'1 '0 all whom it-may concern;

f Bc it known that I, CHARLES H.'K1cx L rcnrnn, a citizen ofthe United States, residm at Atlanta, in the county of Fulton tate of Georgia, have invented 'new and useful Improvements in .Ap aratus for Electric Welding, of which the fillowing is a specification.

This applicationis a part of tlieoiiiginal y application,

Ser. No. 814,384, filed January 26 1914. The pending portion if this" p pllcation relates primarily to a method-.lof forming a seam, while the present appliica tion has to do more particularly with an apparatus for making such a seam and the method-of operation of said apparatus.

The invention relates to a method of and apparatus for electrically'welding seams of various kinds in plate and sheet metal work.

The method is to roll onthe seam a roller or annular shaped electric terminal of the revolving former. In the case herein described, the

method is to roll on the opposite sides of the seam rollers or annular shaped electric terminals of the revolving secondari'es of two Atzansformers,-these secondaries being con-'f face of terminal 30 should be made so as to conform with and enga e this. Pulley 34. is employed to revolve-tf ve'secondary 19 asl -the'plate rected in series. i

In the prevlous art a variety of seams Vhave been designed' for 'connecting'plates and metal sheets by the electric w ding process. In a number of these, a step-bystep method has been employed, consisting in simultaneously forcing two; pressure blocks .toward eachother on opposite sides ass the heavy welding current through slid- 1110 contacts tothe rollers.

The object of the present provide a continuous and unmterrupte welding process from one end of the seam to lthe other, ifdesired. It is also apparent The that much time and labor are.Y saved.

be made more uniform, and the i iiow of welding current is continuous instea of being drawn by intermittent surges.

In ,thev accompanying: Figure 1 1s a-sKetch illustrating' 1n elevasecondary of a welding 'trans` invention is to a seam betweenv the annular terminals of two'rotating'trans-I nular. termina s of two rotating transf formers.

Fig.. 1 illustrates the use of two Welderv transformer secundarias 18-'19.with laminated cores 20-21 andfprimary windings 022-23. The secondaryIS is mounted upon a' shaft supported by bearings 24%25, and

is provided with annular-rim-shaped terminals 26-27. 'The secondary 19 is mounted upon a shaft supportediloy bearings 28-29 and is provided with .annular rimfshape'd terminals 30--31. The terminals 27 and 31 are adapted to roll along the joint and subject the same to mechanical' pressurennd heavy lelectric current,V Lever 32' or other mechanical means is provided for forcing terminal 27 down upon 4the workin As the secondary 1 8 'must 'have la slight motion about the center 33, a self-alining bearing 24 should be provided and the rolling surfaces of'terminals 26-30 should be curved. The

surface of 26 ,should be the yportion of a spherical surface with 33 fas a center. .Sur-

v'oint is fed between roller terminals 27a-31. Both set'zoridaries` 18 land'19 re volve, during the Welding operation. The transformer .cores 20-:21 and the primaries 22-23 are stationary 4and are supported byl Tile path ofthe wel d l the machines frame.

ing current is through'l, 19, 30, 26,718, 27,`

and through the joint being welded back to 31. Figi 1 can be easily modiiiedand simplifie'd by omitting either of the transformer cores and coils, say

circuit of secondary tor for completing the interposed between 19 through the 'work rims 27-31. v

In Fig. 2 Va similar device is. employed. Two welding transformerswith secondaries 20-22. The revolvingsecondary 18 then becomes simply a conduc- The annular rims 2.6`27 form the.

v a. partofthe same joint.

5; izo-'connect ivi/ih the'source of pressure sup-y pIy.'g-- Slip rings 37" are connected'to transformer primary '22" by leads 41'. Slip rings 40' are connectedto transformer primary 23 by lead'llt fi' The terminal rimsQ? 'L4-31- are 10 adaptedv to roll along the'joint to be welded and to subject the same to mechanical presv fsure-an'd heating electric; current.- The ter- -minal frims SZW-30' are adapted to act simi- .'larly on a similar parallel -'oint, or possibly revision can be made for varying and adjusting the distance :between rims 26' 27 and between -rims :30';-31' by vmoving the Wheel mountings along the 4 supporting shafts. A bar or strips of coppe'i` 43' may be .passed between rolling terminals 265-30.' while the plate joint is passing" between, terminals 27'-31; The function of the .copper bar or strips is to complete. -the circuit through secondaries 18-19'fand to' preserve the proper alinenient of the revolving .parts. The path of v-^the welding current is 31', 36', 19 30', 43',

f 26', 35', 18', 35', 2 and being 'welded back. to 31'.l 3'0 through the joint In many cases stripsor ribbons of' sheet t- .copper may be used with advantage to feed between-the'rollin'gannular terminals and the plate joint being Welded. These will serve two pui'poses,rst, to concentrate 85 andflimit'the pressure and current to the place Where itis needed,-second, to increase theareaof contact- WhatI claim is: f 'Y 1. An .apparatus for 'electric heating. or

4r4,0 welding,.comprising 9, primary winding, a

secondary member inductively related thereto, a terminal-vor terminals integrally mount.

edupon saidsecondary member, and means for rotating said vseoandary member and l said terminal orterininals relative to the primary winding.

2. apparatus for fasteningmetals tog'ether, comprising a core 'of laminated met'allic material and conductors for carrying 150 the heating current around said core, wheel sliaped or annular terminals mounted upon lsaid conductors and rotatable therewith and means for rotating said conductors and terminals and rolling the terminals one relative to 'the'otherl y V 3. In an apparatus' for'fastening metals together, the .combination with a 'coi;e 1o'f with the welts or plates.

welding current, the polesofsaid transbers for carrying a current, terminals for applying said currenty mounted upon said secondaries and rotatable "therewith, and means for rolling one of said terminals relative to the other.

5. Anf apparatus for electric heating or welding, comprising a rotating transformer secondary and a rotating conductor'in series therewith for conveying a heating or former secondary terminating in a pair of conducting roller .contact rings, one of said rings being adapted .to contact with the said' rotary conductor and the other of said rings` x being adapted to apply the said heating or welding current.

6. An apparatus for electric 'heating or welding comprising a rotating transformer .secondary vand a conductor in series 'there-` with for conveying a heating or welding current, the poles of said transformer Secondary terminating in ia' lpair. of conducting' roller contact rings,"`one of said rings being adapted to contact with the .said conductorv and the other of said rings being adapted to apply the said heat or Welding current.

7.- An apparatus forl electric heating or Welding comprising' a rotating transformer'VA secondary and a conductor in series 'there withfor conveying the heating or Welding 95 current around metallic material, the ypoles of said transformer secondary terminating `in a pair of conductingroller contact rings one of said rings being adapted to Contactl with the said conductor and the other of said rings being adapted to apply the said with for conveying the heating or welding laminated metallic material and a conductor j for carrying the heating electric current 60- through, 'oraround, said core, of a terminaly vformer secondaries, a pole of each terml mounted upon said conductor and rotatable' therewith, and means for rotating said conductor'and. terminal 'relative to said core.-

4. In lan alternatingcurrent transformer,

65 the combination of rotary 'secondary mem? welding current.

.ing in a roller contact, said contacts current around metallic material, one of the poles of said transformer secondary being adapted to contact with said conductor and the other pole being adapted toapply the 110 heating or weldingcurrent.

9. An apparatus forielectric heating or welding, comprising a rotating transformer secondary and a conductor in series 'there-y with for conveying the heating or welding current around metallic material, one of the 4poles of each ofsaid secondary and said conductor being adapted to vcome .iifito mutual 1 contact andthe other poles" I 'Said lsecondary and said conductor being oppositely dis- Aposed and adapted to'app-lygthe kheating or 10'. AnA apparatus for electric heating -or` welding comprising two rotating trans l25 helma-2 adapted to apply the heating or welding:A current to 'directly opposite sides of. the work.

11 An apparatus for eleetricheating or 130 so.l

Welding metal plates, comprising two roti i" ing transformer secondaries, the poles f' each of said sccondaries terminating in a pair of conducting roller contact rings and two of said contact rings being adapted to apply the heating or welding current to opposite sides of the plates.

12. An apparatus for electric heating or Welding, comprising a rotating transformer secondary and a rotating conductor for conveying the, heating or Welding current, a pole of' cach of said secondary and said conductor terminating in a roller contact ring. these rings being adapted to apply the heating o1\\'elding current to opposite sides of the n'orlr.

13. An `apparatus for electric heating or Weldingmetal plates, comprising a rotating transformer secondary and a rotating conductor for conveying the heating or Welding currentl the poles of said transformer secondary terminating in a pair of conducting roller contact rings, said rotating conductor terminating in a pair of conducting roller contact rings and two of said contact rings being adapted to apply the heating or Welding current to opposite sides of the plates.

14. An apparatus for electric heating or Welding metal plates, comprising a transformer with a pole of its secondary adaptedv to apply the heating or welding current to one side of a plate, and a rotating conductor for conveying the heating or Welding current with poles terminating in roller contact rings, one of'ysaid rings being adapted` to communicate the current to the said transformer secondary and the other of said rings to apply the heating or Welding current to the opposite side of the plate.

15. An apparatus for electric heating or welding, comprising a rotating transformer secondary and a rotating conductor for convveying the heating or Welding erro-ent, Ia

pole ot' each of said secondary and said conductor being adapted to roll in mutual contact, and a pole of each of said secondary and said conductor being adapted to apply the heating or Welding current to opposite sides of the work.

1G. An apparatus for electric welding or heating, comprising two rotating transformer secondaries, a pole of each terminating in a roller contact, said contacts being adapted to apply to directly opposite sides of the Work.

17. An apparatus for electric heating or Welding, comprising a rotating transformer secondary and a rotating conductor for conveying heating or Welding current, a pole of each of said secondary and said conductor terminating in a roller contact, said contacts being adapted to apply to directly opposite sides of the work.

18. An apparatus for electric heating or Welding, comprising a `transformer secondaryand a rotating conductor vforlconreying heating or Welding current, a pole-of said conductor terminating in a roller contact, said contact being adapted to 'applyto the directly'opposite side of the Work from the pole of said transformer secondary.

19. An apparatus for electric heating or welding, comprising a rotating transformer secondary and a lrotating conductor for conveying heating or Welding current', the poles;

vof said transforme-r secondary termlnating in a pair of conducting roller contact rings, one of said contact rings and a' portion of the rotating conductor being adapted to apply the heating or Welding current to directly opposite sides of the Work.

iV. A. S'rnvnifzs, E. H. STEVENS.

Copies of this patent may be obtained for ve cents each, by addressingv the Commissioner of Iatentl,

Washington, D. C. 

